1.PS-EF:
-e Displays all processes running on the system,-f displays some useful information columns
UID: The user responsible for initiating the process
PID: ID of the process
PPID: PID of the parent process (a process started by another process)
C: Processor utilization for the duration of the process
Stime: System time at process startup
TTY: The terminal device from which the process starts
Time: The cumulative CPU times required to run the process;
CMD: Name of the startup program
2. Search data:
grep T Files1
Search in file Files1 for the start of T
2.1 Regular Expressions: grep [tf] files search for strings starting with T or F
Greo tf files string starting with TF
3.BZIP2 Compressed Files Bunzip2 Extract Files
4.gzip Compressed Files
Gzcat: Display the contents of a compressed text file
Gunzip: Extracting Files
5.tar Archive File
6.
Linux essay Four